Carmans River river
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Carmans River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Carmans River
All 1 USGS gauges Snoflo tracks for this river, with current flow, stage, recent change, percent of normal, and the gauge's all-time min / max. Click any header to sort. Cells are heatmapped relative to the column min/max -- darker blue = higher.
| Streamgauge▾ | Streamflow (cfs)▾ | Gauge stage (ft)▾ | 24h Δ (%)▾ | % Normal▾ | Min (cfs)▾ | Max (cfs)▾ | Elevation (ft)▾ |
|---|---|---|---|---|---|---|---|
|
Carmans River At Yaphank Ny
NY
USGS 01305000
|
14 | 1.04 | -3.5 | 68% | 12 | 156 | 38 |
Streamflow elevation profile
Each bubble is one gauge along the river, plotted by current streamflow (x-axis) vs elevation (y-axis), sized by gauge stage. Reading top-to-bottom traces the river from headwaters down to its mouth -- you can see flow accumulate as elevation drops.
Elevation vs streamflow
One point per monitored gauge · bubble size = gauge stage
Carmans River
The Carman's River is a 10.6-mile-long river in Suffolk County, New York. It was named after Thomas Carman, the first European settler in the area. The river flows through the town of Brookhaven and eventually empties into the Great South Bay. The river's hydrology has been altered by several dams and reservoirs, including the Upper and Lower Yaphank Lakes and the Wertheim National Wildlife Refuge. The Wertheim Refuge dam controls the river's flow and ensures a consistent water supply for the surrounding agricultural lands. The river is also a popular destination for recreational activities such as fishing, kayaking, and birdwatching. The Carman's River was designated a Wild and Scenic River by the National Park Service in 2020, recognizing its unique ecological, cultural, and recreational values.
Recreation along the Carmans River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Carmans River in the Snoflo app
Set per-gauge push alerts (e.g. "alert me when flow at the Russian R Nr Healdsburg crosses 5,000 cfs"), and Snoflo's iOS app pushes the moment USGS reports the crossing.
About the Carmans River
Where does the data for the Carmans River come from?
Streamflow and gauge stage data are sourced from the U.S. Geological Survey (USGS) National Water Information System. The aggregate flow shown at the top of the page is computed by Snoflo as the sum of all monitored gauges along the river.
How is "percent of normal" calculated?
Today's aggregate streamflow is compared to the historical average aggregate streamflow on this calendar day across the river's full record. 100% means right on average; values above 100% indicate above-normal flow (wet year); values below indicate below-normal (dry year or drought).
Why are some gauges showing very different flows?
Gauges along a river measure flow at different points: headwater gauges read what's coming off the snowpack or mountain runoff; downstream gauges integrate everything upstream, including tributary inputs. Wide spreads usually mean a tributary is contributing significantly between gauges.
What's the elevation profile chart showing?
Each bubble is one gauge along the river, plotted by streamflow (x-axis) and elevation (y-axis), sized by gauge stage. Reading top-down traces the river from headwaters to mouth -- you can see flow build as elevation drops.
Can I get alerts when a specific gauge crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app on a per-gauge basis. Open any individual streamgauge from the table above and favorite it to set a discharge threshold.